LDGSL/1107/A/1/2 | Institute of Geophysics and Planetary Physics, University of California, 1967 | 1965 | 
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LDGSL/1107/A/1/3 | Lamont Geological Observatory, 1967-1968 | Dec 1967-Feb 1968 | 
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LDGSL/1107/A/1/4 | Princeton University, 1968 | Mar-May 1968 | 
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LDGSL/1107/A/1/6 | Cambridge University, Jan-Mar 1969 | Jan-Mar 1969 | 
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LDGSL/1107/A/1/9 | Cambridge University, 1969 | Sep-Dec 1969 | 
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LDGSL/1107/A/1/11 | General scientific correspondence, 1971 | Jan-Jul 1971 | |
LDGSL/1107/A/1/14 | General correspondence, 1974 | 1973-1974 | 
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LDGSL/1107/A/1/16 | General correspondence, 1976 | 1976 | |
LDGSL/1107/A/1/18 | General correspondence, 1978 | 1978 | |
LDGSL/1107/A/1/24 | General correspondence, 1984 | 1984 | 
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